Panuthai, C.; Thongkampanit, P.; Udomvirojsin, C.; Phanthayuth, P.; Krutwong, A.; Kwannai, S.; Boonkongsen, P.; Thokaew, S.; Werasuk, N. MARKETING MIX FACTORS AFFECTING THE DECISION - MAKING PROCESS TOWARD ATTENDING FITNESS CENTER IN SUPHANBURI PROVIENCE. JSC 2025, 9, 304-317.